| /* |
| * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "asm/macroAssembler.inline.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "interpreter/interpreterRuntime.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "memory/universe.inline.hpp" |
| #include "oops/method.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "runtime/icache.hpp" |
| #include "runtime/interfaceSupport.hpp" |
| #include "runtime/signature.hpp" |
| |
| |
| #define __ _masm-> |
| |
| |
| // Implementation of SignatureHandlerGenerator |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_word(int size_of_arg, int offset_in_arg) { |
| Argument jni_arg(jni_offset() + offset_in_arg, false); |
| Register Rtmp = O0; |
| __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp); |
| |
| __ store_argument(Rtmp, jni_arg); |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_long() { |
| Argument jni_arg(jni_offset(), false); |
| Register Rtmp = O0; |
| |
| __ ldx(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp); |
| __ store_long_argument(Rtmp, jni_arg); |
| } |
| |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_float() { |
| Argument jni_arg(jni_offset(), false); |
| FloatRegister Rtmp = F0; |
| __ ldf(FloatRegisterImpl::S, Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp); |
| __ store_float_argument(Rtmp, jni_arg); |
| } |
| |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_double() { |
| Argument jni_arg(jni_offset(), false); |
| FloatRegister Rtmp = F0; |
| __ ldf(FloatRegisterImpl::D, Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp); |
| __ store_double_argument(Rtmp, jni_arg); |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_object() { |
| Argument jni_arg(jni_offset(), false); |
| Argument java_arg( offset(), true); |
| Register Rtmp1 = O0; |
| Register Rtmp2 = jni_arg.is_register() ? jni_arg.as_register() : O0; |
| Register Rtmp3 = G3_scratch; |
| |
| // the handle for a receiver will never be null |
| bool do_NULL_check = offset() != 0 || is_static(); |
| |
| Address h_arg = Address(Llocals, Interpreter::local_offset_in_bytes(offset())); |
| __ ld_ptr(h_arg, Rtmp1); |
| if (!do_NULL_check) { |
| __ add(h_arg.base(), h_arg.disp(), Rtmp2); |
| } else { |
| if (Rtmp1 == Rtmp2) |
| __ tst(Rtmp1); |
| else __ addcc(G0, Rtmp1, Rtmp2); // optimize mov/test pair |
| Label L; |
| __ brx(Assembler::notZero, true, Assembler::pt, L); |
| __ delayed()->add(h_arg.base(), h_arg.disp(), Rtmp2); |
| __ bind(L); |
| } |
| __ store_ptr_argument(Rtmp2, jni_arg); // this is often a no-op |
| } |
| |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) { |
| |
| // generate code to handle arguments |
| iterate(fingerprint); |
| |
| // return result handler |
| AddressLiteral result_handler(Interpreter::result_handler(method()->result_type())); |
| __ sethi(result_handler, Lscratch); |
| __ retl(); |
| __ delayed()->add(Lscratch, result_handler.low10(), Lscratch); |
| |
| __ flush(); |
| } |
| |
| |
| // Implementation of SignatureHandlerLibrary |
| |
| void SignatureHandlerLibrary::pd_set_handler(address handler) {} |
| |
| |
| class SlowSignatureHandler: public NativeSignatureIterator { |
| private: |
| address _from; |
| intptr_t* _to; |
| intptr_t* _RegArgSignature; // Signature of first Arguments to be passed in Registers |
| uint _argcount; |
| |
| enum { // We need to differenciate float from non floats in reg args |
| non_float = 0, |
| float_sig = 1, |
| double_sig = 2, |
| long_sig = 3 |
| }; |
| |
| virtual void pass_int() { |
| *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); |
| _from -= Interpreter::stackElementSize; |
| add_signature( non_float ); |
| } |
| |
| virtual void pass_object() { |
| // pass address of from |
| intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0)); |
| *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr; |
| _from -= Interpreter::stackElementSize; |
| add_signature( non_float ); |
| } |
| |
| virtual void pass_float() { |
| *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); |
| _from -= Interpreter::stackElementSize; |
| add_signature( float_sig ); |
| } |
| |
| virtual void pass_double() { |
| *_to++ = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); |
| _from -= 2*Interpreter::stackElementSize; |
| add_signature( double_sig ); |
| } |
| |
| virtual void pass_long() { |
| _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); |
| _to += 1; |
| _from -= 2*Interpreter::stackElementSize; |
| add_signature( long_sig ); |
| } |
| |
| virtual void add_signature( intptr_t sig_type ) { |
| if ( _argcount < (sizeof (intptr_t))*4 ) { |
| *_RegArgSignature |= (sig_type << (_argcount*2) ); |
| _argcount++; |
| } |
| } |
| |
| |
| public: |
| SlowSignatureHandler(const methodHandle& method, address from, intptr_t* to, intptr_t *RegArgSig) : NativeSignatureIterator(method) { |
| _from = from; |
| _to = to; |
| _RegArgSignature = RegArgSig; |
| *_RegArgSignature = 0; |
| _argcount = method->is_static() ? 2 : 1; |
| } |
| }; |
| |
| |
| IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler( |
| JavaThread* thread, |
| Method* method, |
| intptr_t* from, |
| intptr_t* to )) |
| methodHandle m(thread, method); |
| assert(m->is_native(), "sanity check"); |
| // handle arguments |
| // Warning: We use reg arg slot 00 temporarily to return the RegArgSignature |
| // back to the code that pops the arguments into the CPU registers |
| SlowSignatureHandler(m, (address)from, m->is_static() ? to+2 : to+1, to).iterate((uint64_t)CONST64(-1)); |
| // return result handler |
| return Interpreter::result_handler(m->result_type()); |
| IRT_END |